Comment by VoluntaryWolf

Comment by GoldenWitch

Comment by Branin

When farming the reputation needed for this transmog set you can complete it by only reaching honored on two factions. You can get the shoulders/robe/gloves from different sets by being honored with Honor Hold. Being honored with either Lower City, Cenarion Expedition or The Sha'tar gives you the reputation to buy legs and the helmet.

Comment by Stompa

These items are only available by reaching honoured reputation and purchasing them from the quartermasters of various factions. You can get the full transmog set with only 2 honoured factions; this may help you sort out what to get where: